Solid forged brass decorative door knocker measuring 8 1/2" tall by 4 3/16" wide. The projection is 1" from the surface of the door. This door accessory mounts with thru bolts that are 5 1/2" from center to center. Will work on doors up to 1 3/4" in thickness. Available in 5 finishes including PVD Lifetime finish. Includes matching finished screw covers for inside of door.